《frpr18p》FRP Resin for General Lamination [Made in Japan Polyester Resin (Friends Poly) Blue Label 18kg] (Impala) / Repair, Waterproofing, Molding, Boat, Resin, Friends Blue (SRSFI0018B) Approximately 1 liter has been used after opening. Compared to what I've used before, the viscosity is a bit different, and it's not as easy for me to use, so I'm selling it. I purchased it about a month ago, so the condition is not bad.